Otto Jensen (11 September 1856 – 26 February 1918) was a Norwegian bishop and politician. He was Minister of Education and Church Affairs from 1906 to 1907 and bishop of Hamar from 1917 to 1918. He was born in Kongsberg as the son of sexton Even Jensen and his wife Inger Margrethe Berggrav. He enrolled as a student in 1874, and graduated in 1879 with the degree cand.theol. In 1880 he was hired as a school teacher in Kristiania. He left the city to become a high school teacher in Stavanger in 1883. From 1889 to 1899 he was a curate in Berg i Smaalenene; he subsequently returned to Stavanger to hold the same position there. In 1898 he had taken the at the University of Kristiania.